Using Dormant Oil
Should I use a dormant oil spray on my trees this year?
Dormant oil spray is used to control insects that overwinter on trees. They kill overwintering insects such as mites, aphids or scales. If these pests were not a problem last year there is no reason to treat. Unnecessary spraying wastes your time, money and can be harmful to your plants and the environment. Be sure to read and follow label directions before using any product.
Related
Upcoming Live Events
& Webinars
Jan. 28, 2026
FREE WEBINAR:
Past, Present & Future of Mitchell Park and its Conservatory, the Domes
Register here
Feb. 13 - 15, 2026
PBS Wisconsin
Garden & Green Living EXPO
Madison, WI
More information
Feb. 18, 2026
FREE WEBINAR:
Plants that Go the Distance
Register here
Feb. 25, 2026
FREE WEBINAR:
Flowering Houseplants
Register here
Mar. 5, 2026
FREE WEBINAR:
Start New Plants from Seeds, Cuttings and More
Register here
Mar. 11, 2026
FREE WEBINAR:
Save Money & Boost Your Growing Success with Bare Root Plants
Register here
Mar. 18, 2026
FREE WEBINAR:
Patio, Deck and Balcony Gardens
Register here
March 26, 2026
FREE WEBINAR:
Getting Started Growing Vegetable and Flower Gardens
Register here
WATCH ON-DEMAND WEBINARS
Learn More
Book an Appearance
Enter for the chance to win a Milwaukee Domes Alliance membership & merchandise!
ENTER NOW
